This edge case is possible: a user chooses a suggested article from the feed, but then there are not actually any suggestions available when they arrive on the article. This can happen because another user has added all the links since the feed was refreshed, among other reasons.
In this case:
- The user should see a simple error dialog.
- It should say, "Suggestions are no longer available on this article."
- The button should say, "Back to suggested edits"
- The button should go back to the suggested edits module on mobile, or back to the homepage on desktop.
See T278112: Instrumentation: dialog for no suggestions available for details.